veth0_vlan: left promiscuous mode
veth1_macvtap: left promiscuous mode
veth0_macvtap: left promiscuous mode
veth1_vlan: left promiscuous mode
veth0_vlan: left promiscuous mode
Oops: general protection fault, probably for non-canonical address 0xdffffc001fffe1ac: 0000 [#1] SMP KASAN PTI
KASAN: probably user-memory-access in range [0x00000000ffff0d60-0x00000000ffff0d67]
CPU: 0 UID: 0 PID: 3520 Comm: kworker/u8:7 Not tainted 6.16.0-next-20250807-syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
Workqueue: netns cleanup_net
RIP: 0010:ip_mc_hash_remove net/ipv4/igmp.c:1431 [inline]
RIP: 0010:__ip_mc_dec_group+0x2fd/0x690 net/ipv4/igmp.c:1774
Code: 99 fa b9 f7 c6 05 f9 b3 87 05 01 48 c7 c7 c0 b0 9e 8c be 97 05 00 00 48 c7 c2 40 b1 9e 8c e8 0a ce 97 f7 4c 89 e3 48 c1 eb 03 <42> 80 3c 2b 00 74 08 4c 89 e7 e8 34 66 1d f8 4d 8b 2c 24 4d 39 f5
RSP: 0018:ffffc9000b9373d8 EFLAGS: 00010206
RAX: ffffffff8a05b8ee RBX: 000000001fffe1ac RCX: ffff888030489e00
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffff888057020020 R08: ffffffff8f5392a7 R09: 1ffffffff1ea7254
R10: dffffc0000000000 R11: fffffbfff1ea7255 R12: 00000000ffff0d60
R13: dffffc0000000000 R14: ffff8880592b9a00 R15: 1ffff1100ae04004
FS:  0000000000000000(0000) GS:ffff888125c16000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fed58bf14f0 CR3: 00000000538ae000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 000000000000000e DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 inetdev_event+0x2a7/0x15b0 net/ipv4/devinet.c:1642
 notifier_call_chain+0x1b6/0x3e0 kernel/notifier.c:85
 call_netdevice_notifiers_extack net/core/dev.c:2267 [inline]
 call_netdevice_notifiers net/core/dev.c:2281 [inline]
 netif_close_many+0x29c/0x410 net/core/dev.c:1784
 unregister_netdevice_many_notify+0x7b9/0x1ff0 net/core/dev.c:12118
 unregister_netdevice_many net/core/dev.c:12211 [inline]
 default_device_exit_batch+0x819/0x890 net/core/dev.c:12715
 ops_exit_list net/core/net_namespace.c:204 [inline]
 ops_undo_list+0x522/0x990 net/core/net_namespace.c:251
 cleanup_net+0x4c5/0x800 net/core/net_namespace.c:682
 process_one_work kernel/workqueue.c:3236 [inline]
 process_scheduled_works+0xade/0x17b0 kernel/workqueue.c:3319
 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3400
 kthread+0x711/0x8a0 kernel/kthread.c:463
 ret_from_fork+0x3f9/0x770 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:ip_mc_hash_remove net/ipv4/igmp.c:1431 [inline]
RIP: 0010:__ip_mc_dec_group+0x2fd/0x690 net/ipv4/igmp.c:1774
Code: 99 fa b9 f7 c6 05 f9 b3 87 05 01 48 c7 c7 c0 b0 9e 8c be 97 05 00 00 48 c7 c2 40 b1 9e 8c e8 0a ce 97 f7 4c 89 e3 48 c1 eb 03 <42> 80 3c 2b 00 74 08 4c 89 e7 e8 34 66 1d f8 4d 8b 2c 24 4d 39 f5
RSP: 0018:ffffc9000b9373d8 EFLAGS: 00010206
RAX: ffffffff8a05b8ee RBX: 000000001fffe1ac RCX: ffff888030489e00
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffff888057020020 R08: ffffffff8f5392a7 R09: 1ffffffff1ea7254
R10: dffffc0000000000 R11: fffffbfff1ea7255 R12: 00000000ffff0d60
R13: dffffc0000000000 R14: ffff8880592b9a00 R15: 1ffff1100ae04004
FS:  0000000000000000(0000) GS:ffff888125c16000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fed58bf14f0 CR3: 000000007f4bc000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 000000000000000e DR6: 00000000ffff0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	99                   	cltd
   1:	fa                   	cli
   2:	b9 f7 c6 05 f9       	mov    $0xf905c6f7,%ecx
   7:	b3 87                	mov    $0x87,%bl
   9:	05 01 48 c7 c7       	add    $0xc7c74801,%eax
   e:	c0 b0 9e 8c be 97 05 	shlb   $0x5,-0x68417362(%rax)
  15:	00 00                	add    %al,(%rax)
  17:	48 c7 c2 40 b1 9e 8c 	mov    $0xffffffff8c9eb140,%rdx
  1e:	e8 0a ce 97 f7       	call   0xf797ce2d
  23:	4c 89 e3             	mov    %r12,%rbx
  26:	48 c1 eb 03          	shr    $0x3,%rbx
* 2a:	42 80 3c 2b 00       	cmpb   $0x0,(%rbx,%r13,1) <-- trapping instruction
  2f:	74 08                	je     0x39
  31:	4c 89 e7             	mov    %r12,%rdi
  34:	e8 34 66 1d f8       	call   0xf81d666d
  39:	4d 8b 2c 24          	mov    (%r12),%r13
  3d:	4d 39 f5             	cmp    %r14,%r13